Until 2012, Marlin's open pit operation employed a conventional loader/truck cycle, producing approximately 25,000 total tonnes per day. Underground operations employ mechanized cut-and-fill and long hole stoping mining, with underground loading equipment feeding haul trucks that transport the ore to the surface via ramps. Production from underground operations is now roughly 3,200 ore tonnes per day.

Ore is processed in a conventional crushing, grinding and milling circuit. Marlin also has a tailing storage facility, a waste rock storage area and various ancillary installations. Since 2012, a Filter Plant was commissioned to dry the tailings from the mill. The dry tailings are being used to backfill the pit.